Shower controller



FIG. 1 is a top, front, left side perspective view of a shower controller showing our new design;

FIG. 2 is a front view thereof;

FIG. 3 is a rear view thereof;

FIG. 4 is a left side view thereof;

FIG. 5 is a right side view thereof;

FIG. 6 is a top view thereof;

FIG. 7 is a bottom view thereof; and,

FIG. 8 is a top, front, right side perspective view thereof.

The broken lines depict portions of the shower controller that form no part of the claimed design. 

CLAIM We claim the ornamental design for a shower controller, as shown and described. 